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S40mm APFSDS-T & HEAB-T Development 39 th Gun and Ammunition Conference 14 April 2004

S40mm APFSDS-T & HEAB-T Development 39 th Gun and Ammunition Conference 14 April 2004 D.E. Dillard, P.E. 30/40mm Comparison What is Super 40mm?. PGU 13 w/360gm projectile. Cartridge OAL = 289.97mm Current ALACV Design W/2 Case Lengths. Gen I w/680gm projectile.

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S40mm APFSDS-T & HEAB-T Development 39 th Gun and Ammunition Conference 14 April 2004

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  1. S40mm APFSDS-T & HEAB-T Development 39th Gun and Ammunition Conference 14 April 2004 D.E. Dillard, P.E.

  2. 30/40mm ComparisonWhat is Super 40mm? PGU 13 w/360gm projectile Cartridge OAL = 289.97mm Current ALACV Design W/2 Case Lengths Gen I w/680gm projectile GENERAL DYNAMICS Ordnance & Tactical Systems

  3. S40mm Ammunition & Status Ammunition Family Consists of: • APFSDS-T (Armor Piercing Fin Stabilized Discarding Sabot – Traced) • Baseline design with aluminum sabot tested • Baseline design with lightweight sabot tested • TPDS-T (Target Practice Discarding Sabot – Traced) • HEAB-T (High Explosive Air Burst – Traced) • Gen I design with GD-OTS fuze assembly tested • TP-T (Target Practice – Traced) TP for Airburst • Designed and tested • TP-S (Target Practice – Spotter) • Designed and tested GENERAL DYNAMICS Ordnance & Tactical Systems

  4. S40mm APFSDS-T Status • Baseline design with 218mm long case • Demonstrated from Mann Barrel and MK44 Auto-Gun at High Rate Burst. • Demonstrated Dispersion at 2k = .32 x .33 mr • Maximum muzzle velocity capability with this design ~1350m/s • Optimized Design with Common Case • Design concept completed • Phase I testing with lightweight sabot completed in Feb 04 • Muzzle velocity capability with this design ~ 1460m/s GENERAL DYNAMICS Ordnance & Tactical Systems

  5. ALACV Super 40mm APFSDS-T Sabot M919 EI Propellant / SMP Hybrid Propellant Obturator Windscreen Fin Penetrator) RTV Boot GENERAL DYNAMICS Ordnance & Tactical Systems

  6. ALACV Super 40mm APFSDS-T Phase I Light Weight Sabot GENERAL DYNAMICS Ordnance & Tactical Systems

  7. S40mm AirBurst Demonstration Fuze Setting • The 30/40mm HEAB rounds use a contact communication system similar to that currently used for the ACSW. (Fuze commonality) • Burst point is based on Time of Flight calculation. • (2) contact bands are located on the bourrelet of the projectile forward of the driving band. • We communicate and set the fuze after it is chambered in the Mann Barrel or in the Auto gun . • We have demonstrated contacting and setting the fuze in the feed system of the MK44 auto gun at HRB of 200 SPM. Contact Bands GENERAL DYNAMICS Ordnance & Tactical Systems

  8. GD-OTS AirBurst Fuze Contactor • Fuze contactor/setter system demonstrated in MK44 auto gun • Air Burst Set & Function demonstrated from 225m to 2800m • Fuze Set & Fired @ High Rate Burst rates • Burst Accuracies ~ 2.5m SD @ 1500m @ ATC • Digressive & Progressive String of Pearls Demonstrated Gun Feeder Fuze Communication Dwell Position Spent Case Breech GENERAL DYNAMICS Ordnance & Tactical Systems

  9. 30/40mm AirBurst Current Fire Control System 30/40mm AirBurst Integrated into Vehicle Phase I Phase II Inputs Point and Shoot Capability Current Demonstration Phase III Total integration into vehicle fire control system Matured Design: The HEAB-T round will default to a Point Detonate (PD) function if an object is struck before the timer functions. GENERAL DYNAMICS Ordnance & Tactical Systems

  10. S40mm AirBurst S40mm IRAD Progress Continued • S40mm AirBurst HEAB-T Gen I (680 gm) w/Base Mounted Fuze • Successful test of S40mm HEAB with 75gm (actual) PBXN-5 charge on February 19, 2004 • Muzzle Velocity ~1000m/s GD-OTS/Kaman Mechanical S&A SMP Hybrid Propellant GD-OTS Warhead 75-80gm PBXN-5 GD-OTS Electronic Fuze Santa Barbara Case GENERAL DYNAMICS Ordnance & Tactical Systems

  11. S40mm AirBurst Demonstration – Feb 19, 2004 Test Set-Up • S40mm MK44 Mann Barrel • Smash Plate @ ~615m • Tarps on the ground forward of the smash plate • Mannequins (standing & prone) are placed at approx. 600m. • Weibel Radar • Cameras • (2) sideline video at target site • (1) sideline High Speed video at target site • (1) video located at ~540 meters looking downrange at the target site • (1) video located at the target looking up range at the burst location • (1) video looking downrange from over the gun GENERAL DYNAMICS Ordnance & Tactical Systems

  12. S40mm HEAB-T Feb 19, 2004 Our Dummies on the way to work Is this where we are supposed to be? GENERAL DYNAMICS Ordnance & Tactical Systems

  13. S40mm HEAB-T Feb 19, 2004 S40mm HEAB Hits GENERAL DYNAMICS Ordnance & Tactical Systems

  14. S40mm HEAB-T Feb 19, 2004 GENERAL DYNAMICS Ordnance & Tactical Systems

  15. S40mm HEAB-T Feb 19, 2004 GENERAL DYNAMICS Ordnance & Tactical Systems

  16. S40mm HEAB-T Demonstration February 19, 2004 High Speed Video of Round #4 (AVI Video 5 – 7 seconds) GENERAL DYNAMICS Ordnance & Tactical Systems

  17. S40mm HEAB-T Demonstration February 19, 2004 If this had been a “String of Pearls”, this is how it would have looked. GENERAL DYNAMICS Ordnance & Tactical Systems

  18. GD-OTS S40mm FOOTPRINT GENERAL DYNAMICS Ordnance & Tactical Systems

  19. Super40mm HEAB Demo (600m to weapon) 40 Mannequins Prone Burst Points 3-High Sand-Bag Wall Standing S4 S1 P7 P6 S5 P5 60 C C L L 2 4 3 1 55 P4 P2 Direction of Fire S2 S3 P1 P3 80 GENERAL DYNAMICS Ordnance & Tactical Systems

  20. APFSDS-T Projectile designs for baseline case and common case Test fired from a MK44 auto gun Light Weight sabot manufacture, LAP & Test 1450m/s velocity objective can be achieved with common case and lightweight GD-OTS sabot AirBurst AirBurst Simulator/Trainer designed and tested HEAB-T with base mounted fuze successfully tested. Lethality analysis with mid-body fuze completed by ARDEC Capable of being fired from MK44 auto-gun w/String of Pearls S40mm AirBurst & APFSDS-T SUMMARY – GD-OTS S40mm Status at End of CY03 GENERAL DYNAMICS Ordnance & Tactical Systems

  21. Why S40mm? INCREASED LETHALITY GENERAL DYNAMICS Ordnance & Tactical Systems

  22. S40mm AirBurst & APFSDS-T S40mm HEAB-T & APFSDS-T with Common Case S40mm IRAD “Parametric Study” (GD-OTS/Arrow Tech) to Determine Optimum Case Design is complete • 190 - 195mm common case length appears best • APFSDS-T muzzle velocity of >1450m/s will meet lethality objective with the GD-OTS penetrator/sabot design. • HEAB-T would design deliver 725gm warhead with ~80gm explosive – muzzle velocity ~970m/s GENERAL DYNAMICS Ordnance & Tactical Systems

  23. 30/40mm AirBurst Summary • GD-OTS has demonstrated the capability to set AB rounds and fire at high rate burst speeds in the MK 44 gun. String of Pearls capability demonstrated. • GD-OTS demonstrated 30mm and 40mm HEAB rounds on Feb 18 & 19, 2004. • GD-OTS has fired S40mm APFSDS-T with a lightweight sabot using Wimmis EI & Hybrid propellant on Feb 20, 2004. • The GD-OTS Fuze package will fit into cannon caliber ammunition from 25mm (M242), 30/40mm (MK44) to 35/50mm (Bush III). GENERAL DYNAMICS Ordnance & Tactical Systems

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